Michelle Knight: Castro thought I was a prostitute

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Story highlights

Cleveland kidnapping victim says she was tied up like "an ornament on the wall"

Knight, Amanda Berry and Gina DeJesus were kidnapped and raped by Castro

Castro committed suicide in his prison cell in September

Six months after she was freed from the "house of horrors" where Ariel Castro held her captive for 11 years, Cleveland kidnapping victim Michelle Knight is speaking out.

In an exclusive interview with Dr. Phil McGraw scheduled to air Tuesday and Wednesday, Knight describes a moment when Castro trapped her in a room and tied her up with an orange extension cord.

"I was tied up like a fish," she said, "an ornament on the wall."

An excerpt released by the "Dr. Phil" syndicated talk show Monday shows Knight sitting cross-legged on a couch and drawing a U-shape in the air with one finger as she describes how Castro hung her by her feet, neck and arms.

Knight also says Castro taped her mouth shut with duct tape, according to another excerpt posted on the show's YouTube channel. And she tells McGraw she once picked a lock to try to escape, drawing an ominous warning from Castro: "Now you're gonna be punished."

Knight, Amanda Berry and Gina DeJesus were freed from Castro's Cleveland home in May, drawing national attention to the horrific case.

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Dr. Phil on Michelle Knight's survival

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The dramatic rescue came after neighbors heard Berry's cries and broke down a door.

"It's astounding to me that she had the strength that she did," McGraw told "Anderson Cooper 360." "She says that she was referred to as the unbreakable one. She fought him every step of the way."

McGraw said Knight was chained around the neck and waist with a motorcycle helmet on her head. She was left there for days at a time, Mcgraw said, adding that Knight told him she couldn't lie down because the chain was too short. So she would just lean and wait until she passed out from fatigue.

Knight told McGraw, though, that she didn't always fight back, at least not at first.

She said she was in shock after being taken and all she could do was cry and beg him to let her go back to her son.

He threw money at her.

"He was obsessed with prostitutes and also he thought I was a 13-year-old prostitute," she said in the interview. "When he found out my real age he got mad."

"You took 11 years of my life away, and I have got it back. I spent 11 years in hell, and now your hell is just beginning," she told Castro. "I will overcome all this that happened, but you will face hell for eternity."